Related by context. Frequent words. (Click for all words.) 63 greenhouse emissions 62 greenhouse gases 61 greenhouse gas emissions 60 carbon dioxide emissions 59 warming gases 59 emissions 59 heat trapping carbon dioxide 59 heat trapping gases 58 greenhouse gasses 58 greenhouse gas emitting 57 nitrous oxide emissions 57 greenhouse gases emitted 56 Carbon dioxide emissions 56 pollutant emissions 56 global warming gases 55 gases blamed 55 carbon dioxide methane 54 carbon emissions 54 nitrogen oxide emissions 53 greenhouse gas GHG emissions 53 greenhouse gas emission 53 carbon dioxide 53 carbon dioxide emission 53 CO2 emissions 53 GHG emissions 53 heat trapping emissions 52 nitrogen oxides NOx 52 GHGs 52 reduce carbon emissions 52 heat trapping greenhouse gases 52 carbon emission 52 greenhouses gases 51 greenhouse gas 51 emission reductions 51 carbon dioxide CO2 emissions 51 mercury emissions 51 burning fossil fuels 51 emission 51 carbon dioxide CO2 50 sulfur dioxide emissions 50 carbon emitting 50 C# emissions 50 emit carbon dioxide 50 pollution 49 nitrogen oxides 49 carbon dioxide emitted 49 megatonnes 49 greenhouse gas emitters 48 NOx emissions 48 mercury pollution 48 Emissions 48 nitrogen oxide 47 CO2 emission 47 emit greenhouse gases 47 fossil fuels 47 pollutants 47 floods droughts 47 fossil fuel 47 carbon emitters 47 droughts floods 47 fine particle pollution 46 air pollution 46 tailpipe emissions 46 CO2 emitted 46 particulate matter PM 46 greenhouse gas emission reductions 46 reduce greenhouse gas 46 curbing greenhouse gases 45 crop residues 45 reducing carbon emissions 45 nitrogen phosphorus 45 particulate emissions 45 Greenhouse gases 45 emission reduction 45 heat trapping pollution 45 gigatons 45 harmful gases 45 Kyoto pact 45 exhaust emissions 45 harmful pollutants 45 greenhouse gas emitter 45 GHG reduction 44 Greenhouse Gas Emissions 44 greenhouse gas concentrations 44 gases 44 CO2 44 greenhouse gas GHG 44 carbon emitted 44 nitrogen fertilizers 44 Greenhouse Gases 44 HCFC 44 emitters 43 toxic pollutants 43 heat trapping 43 sulfur dioxide 43 polluting 43 wind turbines solar panels 43 deployed warheads 43 global warming 43 GHG 43 Co2